According to Prendergast, that got written in when Donovan was
close to leaving to protect really Grunwald's--

Heiskell:

Was it that late?

Q:

Yes; I'll get it for you in a second.

Heiskell:

Well, I guess the answer with Donovan was--he and I had
worked together so long, and got on--and understood each other so
well, that I don't think he had a real problem with C.E.O.,
particularly as he knew that I didn't like the title anyway.
[laughter] That was sufficient indication. He knew perfectly well
that I would not interfere with his business, and, in fact, for over
seventeen years, or something like that, he and I worked so closely
together that nobody ever knew what happened on the 34th floor. When
there were problems that couldn't be solved below, they got solved
upstairs, and there was never any--you know, we just made an
announcement: “This is how it's going to be.” Period.